var a = "zs";
var age = 18; //自动推断
console.log(a.toUpperCase());
var changeNameToUpper = function (name) {
    var a = name.toUpperCase();
    return a;
};
console.log(changeNameToUpper("sss"));
console.log(changeNameToUpper("yyy"));
var bb = function (a, b) {
    return a * b;
};
var cc = function (a, b) {
    return a + b;
};
var dd = function (a, b) {
    return a + b;
};
console.log(bb(2, 3));
console.log(cc("ss", "yy"));
console.log(dd("yy", 6));
